In the 1930s, gangs in Shanghai engaged in open and covert struggles with each other. A gang leader was once ambushed on his way home from a movie and retreated into a laundry shop, but was surprised frequently. After narrowly escaping, he took advantage of this opportunity, Mei XiaoSister set up a bureau and asked Mr. Ou to assist with the investigation. Following Miss Mei's instructions, the five of them arranged to chat at a bar they often went to. During the conversation, the four of them talked about the topic of the big shot being ambushed, and each person began to revolve around the big shot being ambushedThe game started with a wild imagination, and the final topic fell on the crow's mother-in-law, laundry shop owner and wife, and Little Buddha's ex-wife. It seemed that these people were all intricately involved in the mastermind's assassination attemptMr. Ou, who was listening on the side, was also attracted by the topic of the four of them. As the atmosphere grew stronger, the four of them began to blame and suspect each other. In the end, they drew their guns and confronted each other. At a critical moment, Mr. Ou came out to apologizeSurrounded, but unexpectedly injured by a secret robbery, the four of them are analyzing who exactly is it?